The anterior white commissure is a band of white matter just in front of the central canal where fibres cross from one side of the spinal cord to the other, especially pain and temperature fibres joining the spinothalamic tracts.
| Location | In front of the grey commissure and central canal, behind the anterior median fissure |
|---|---|
| Parts |
|
| Connections | |
| Blood Supply | Anterior spinal artery |
Lets pain and temperature signals cross to the opposite side of the cord.
In syringomyelia, a fluid cavity in the central cord destroys these crossing fibres first, causing loss of pain and temperature in a cape-like pattern over the shoulders and arms with preserved touch. Patients may burn their hands without noticing.
A fluid-filled cavity in the cord damaging crossing fibres, causing cape-like loss of pain and temperature.
Damage to the central cord causing arm weakness and sensory loss greater than in the legs.
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